Finding the Fourth Proportional to 77,560.72, 116,354.72 and 40,110.60

Step by Step Solution

1. Step 1: Write the proportion equation
   77,560.72 : 116,354.72 = 40,110.60 : x
2. Step 2: Convert to fraction form
   77,560.72/116,354.72 = 40,110.60/x
3. Step 3: Cross multiply
   77,560.72x = 116,354.72 × 40,110.60
4. Step 4: Simplify right side
   77,560.72x = 4,667,057,632.03
5. Step 5: Solve for x
   x = 4,667,057,632.03/77,560.72
6. Step 6: Final answer
   x = 60,172.95